Improvement in doey-boat knees



n. e. MATTHEWS, or BOOTHBAY,=MAINE,

Letters Patent No. 76,487, dated 4pm? 7, .1868.

IMPROVEMENT IN DOBY-BOAT KNEES.

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KNOW ALL MEN BY THESE PRESlilNllS: Z a t i,

That I, E. G. MATTHEWS, of Boothbay, in the county of Lincoln, and State of Maine, haveinvcnted certain new'and useful Improvements in Dory-Boat Knees, of which thefollowing is a full. clear, andexact description, reference being'had to the accompanying drawings, forming a part of this specification, in which- Figure 1 represents so much of a knee as is-nccessary to illustrate my invention.

Figure 2 represents a longitudinal central section; and I Figure 3 represents a bottom view. I

To enable those skilled in the art to which my invention belo'figs to makeand are thc-smnc,I will proceed to describe it more in detail. p

In the drawings, the. parts marked A A are pieces of wood out out lengthwiseof the grain of the wood, and fitted or jointed to abut against each other, as shown at a, fig. 2. The under sides of the pieces A A are out out as shown at b 6, toreceive the under flanges, c 0,. of the peculiarly-shaped metal knee-supports B B, which are made with under flangesw c, and upper flanges, (Z d, and curved upper gu'ards,'e e the latter joining the flanges 01 (int each end, as fully shown'in figs. 1 and'2. The upper guards, e e, not only shield thc'fiangcs d El from injury at the pointsf, but they also allow'of a circulation of air-past the joint :2, which prevents decay and rot at the joint a.

The flanges e c are fitted in flush with faces g'g'of the pieces A A, so that the bottom boards of the boat can be nailed or spiked to the central parts, it h, of the pieces A A, to. make a. tight fit, and yet have a-support against the flanges c c. I I

Knees for dory boats, as heretofore constructed, most of them being sawed out, and often out across the grain of the wood, have been very liable to split or open, and thus render the boat unserviceable. All such objections are, however, obviated by my improved knee.

The metal knee-supports B B are firmly screwedor bolted to the pieces A A,a-s indicated in the drawings,

and their construction is such that they give great strength to the knee, and at the same time prevent all liability of injury to the joint, both above and below, while ailording proper ventilation about the 'npper part of the joint, as before described. I

Having described my improved dory-boat knee, what I claim therein as new and of my invention, and desire to secure by Letters Patent, is-

A dory-boat knee in which the wooden parts, A A, are combined with the 'metal supporting-plates B B provided with the flanges and guards c'cZe, under the arrangement n-ndfor operation as herein shown and specified. I I v I E. G. MATTHEWS.

Witnesses:

G. Gnoss, WM. OWEN. 

